Samsung Galaxy SII Downgrade firmware ICS to Gingerbread

Downgrade the firmware in Samsung Galaxy SII can be so frustating, the main problem is an error messege “the application update software (process xxxxxxxx) has stopped unexpectedly”. That happen because not all ICS file are wipe when flashing or some left ICS files meet the gingerbread files.

Preparation

Download and extract Gingerbread Firmware (2.3.x)

Download and install ODIN in windows

Downgrade Galaxy SII firmware from ICS to Gingerbread

Go to Menu > Setting > Application > Development

Check USB Debugging

Run ODIN

Connect Galaxy SII to PC/Laptop

Wait until ODIN Detect the device

Check Re-Partition

Check Auto Reboot

Check F.Reset Time

PIT select u1_02_20110310_emmc_EXT4.pit

PDA Select file CODE_ …….tar.md5

PHONE select file MODEM_……tar.md5

CSC Select GT-I9100_…..tar.md5

Click Start, and wait.

When ODIN give a messege PASS (green), mean flashing is complete

Reboot Samsung Galaxy SII

Done, the firmware is downgrade to Gingerbread (again)

note:

PIT file u1_02_20110310_emmc_EXT4.pit can find from ODIN 1.85

In PDA, PHONE and CSC just find similiar file, because every firmware have their own file name.